Dual seal pourout fitment and closure combination

ABSTRACT

A one-piece pourout fitment and a closure member, in combination with a liquid containing container, incorporating an improved sealing configuration. A pourout fitment is fabricated in one piece and includes a disc-shaped member having a central opening, a peripheral bottle neck engaging member, an axial, hollow, pouring tube defining the periphery of the central opening, and an axial hollow, vent tube, concentrically located with respect to the pouring tube and connected thereto by a plurality of ribs. The upper portion of the pouring tube is outwardly flared and terminates in a substantially vertical section. The closure member has an upper panel and a depending skirt with interior, bottle neck engaging threads molded therein. An annular sealing groove is defined by annular projections depending vertically downward from the closure upper panel. The inner wall of the sealing groove is tapered to match the flare of the upper portion of the pouring tube. The outer wall of the sealing groove is substantially vertical. In operation, the pourout fitment member is engaged on the neck of a bottle. The closure member is then engaged with threads on the bottle neck. When the closure member is fully engaged, the bottle contents are sealed due to the engagement of the flared portion of the pourout fitment with the tapered inner wall of the sealing groove and the vertical end portion of the flared portion of the pourout fitment with the substantially vertical outer wall of the sealing groove.

United States Patent 1 Miller 1 Oct. 2, 1973 1 DUAL SEAL P OUROUTFITMENT AND CLOSURE COMBINATION [75] Inventor: Ira H. Miller, Sun CityCenter, Fla.

[73] Assignee: Owens-Illinois, llnc., Toledo, Ohio [22] Filed: Jan. 31,1972 [21] Appl. No.: 222,160

Primary Examiner-Robert B. Reeves Assistant Examiner-H. Grant Skaggs,Jr. Attorney A. J. Steger et al.

[57] ABSTRACT A one-piece pourout fitment and a closure member, incombination with a liquid containing container, incorporating animproved sealing configuration. A pourout fitment is fabricated in onepiece and includes a discshaped member having a central opening, aperipheral bottle neck engaging member, an axial, hollow, pouring tubedefining the periphery of the central opening, and an axial hollow, venttube, concentrically located with respect to the pouring tube andconnected thereto by a plurality of ribs. The upper portion of thepouring tube is outwardly flared and terminates in a substantiallyvertical section. The closure member has an upper panel and a dependingskirt with interior, bottle neck engaging threads molded therein. Anannular sealing groove is defined by annular projections dependingvertically downward from the closure upper panel. The inner wall of thesealing groove is tapered to match the flare of the upper portion of thepouring tube. The outer wall of the sealing groove is substantiallyvertical. in operation, the pourout fitment member is engaged on theneck of a bottle. The closure member is then engaged with threads on thebottle neck. When the closure member is fully engaged, the bottlecontents are sealed due to the engagement of the flared portion of thepourout fitment with the tapered inner wall of the sealing groove andthevertical end portion of the flared portion of the pourout fitmentwith the substantially vertical outer wall of the sealing groove.

2 Claims, 7 Drawing Figures DUAL SEAL POUROUT FITMENT AND CLOSURECOMBINATION BACKGROUND OF THE INVENTION This invention relates generallyto pourout fitments. More particularly, this invention relates to acombination of a pourout fitment, a closure, and a liquid containingcontainer. Most specifically, this invention relates to a pouroutfitment which is sealed by engagement of two sections of an integralpouring tube by a sealing groove formed as a part of the closure member.

One of the recurrent problems with the use of pourout fitments is thedifficulty of sealing the contents of a bottle on which such a fitmentis placed. Most of such fitments have a closure member which is threadedon the bottle in an attempt to seal the fitment. Such seals have notbeen completely successful, thus leading to some leakage if the bottleis inverted or shaken with the closure member in place. If, on the otherhand, the seal has been adequate, it has often been necessary to makethe pourout fitment in two or more pieces to obtain the proper liquidpouring characteristics. Typical of the patents illustrating the priorattempts to solve this problem are U.S. Patent Nos. RE. 24,695 and3,319,842. The present invention incorporates an effective twopoint sealon a one-piece pourout fitment which exhibits excellent pouringcharacteristics.

SUMMARY OF THE INVENTION This invention is the combination of aone-piece pourout fitment, a closure member, and a bottle adapted tocontain a liquid. The fitment, while made as a unitary structure, ismade up of 'a number of elements, including the following: a discelement having a central opening; an annular bottle neck engagingportion attached to the periphery of the disc element; an axial, hollowpouring tube defining the periphery of the central opening and extendingvertically above and below the disc element, the upper portion of thepouring tube being flared and terminating in a substantially verticalportion, the lower portion of the pouring tube terminating in aninwardly directed flange; and a tapered, axial, hollow vent tube havinga maximum outside diameter less than the inside diameter of the pouringtube and being located concentrically with respect to the pouring tube,the vent tube being integrally connected to the flange at the lowerportion of the pouring tube by a plurality of ribs, thus defining aplurality of openings to allow the escape of a liquid within the bottle.The bottle has an upper neck portion with a rim defining a liquidpouring opening. A fitment engaging groove is located just below therim. The pourout fitment is placed in position on the bottle neck, withthe pouring and vent tubes entering the opening and the annular neckengaging portion entering the groove to hold the fitment in position.The neck portion of the bottle has external threads formed thereon belowthe fitment engaging groove. The closure member is adapted to seal thefitment and thus prevent escape of any liquid when it is in place. As isthe case with the fitment, the closure member is molded as a unitarystructure, but has several parts, including the following: asubstantially horizontal top panel; a depending skirt attached to thetop panel and having interior threads for selective engagement with thethreads on the bottle neck; and an annular sealing groove defined byannular projections depending downwardly from the top panel,

the inner wall of the groove being tapered, with the outer wall of thegroove being substantially vertical. In operation, the closure member isplaced over the pourout fitment positioned on a bottle neck, and the twosets of threads are engaged. This action also places the upper, flaredportion of the pourout tube in the sealing groove. As the threads arefully engaged, the upper, flared portion of the pourout fitmentsealingly engages the tapered wall of the sealing groove, and thevertical end portion of the upper, flared portion of the pourout tubesealingly engages the vertical wall of the sealing groove.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an elevation view, in crosssection, of the pourout fitment of the present invention;

FIG. 2 is an elevation view, partially cut away, one one embodiment ofthe closure member of the present invention;

FIG. 3 is a bottom view of the pourout fitment of the present invention;

FIG. 4 is an elevation view, in cross section and on an enlarged scale,of the pourout fitment and closure member of the present invention inposition on the neck portion of a container; I

FIG. 5 is an elevation view, partially cut away, of a second embodimentof the closure member of the present invention;

FIG. 6 is an elevation view, in cross section and on an enlarged scale,of the pourout fitment of the present invention in position on acontainer neck with the closure member of FIG. 5 partially engaged; and

FIG. 7 is a view similar to FIG. 6, except that the closure member ofFIG. 5 is shown fully engaged in a sealing position.

DETAILED DESCRIPTION OF THE DRAWINGS FIGS. 1 and 3 illustrate theone-piece. pourout fitment 10 of the present invention. Thecross-sectional view of FIG. 1 illustrates the essential features of thepourout fitment 10. The fitment is constructed beginning with adisc-shaped upper member 12. Attached to the periphery of the disc 12 isa downwardly depend ing, annular, bottle neck engaging member 14. Thebottle neck engaging member 14 has a continuous bead 15 formed on itsinterior surface. The bead 15 is adapted to engage a groove formed inthe upper portion of a container to hold the pourout fitment 10 securelyin position in the opening of a container. A centrally located opening16 is provided completely through the disc member 12. The periphery ofthe opening 16 is defined by an integral, axial, hollow, pouring tube18. The pouring tube 18 is flared at its upper extremity and terminatesin a slightly flattened vertical'portion 20. The lower extremity of thepouring tube 18 terminates in an inwardly directed flange 22. The flange22 is integrally connected to a hollow, axially disposed, vent tube 24by a plurality of rib members 26. It may be seen that the: vent tube 24tapers through substantially its entire length, and has an offset upperregion defined by a flow-diverting ledge 28. It is readily apparent fromFIG. 1 that. the outside diameter of the vent tube 24 is less than thediameter of the pouring tube 18, thereby creating a tapered spacebetween the vent tube 24 and the pouring tube 18 through which liquidmay pass. Liquid is allowed to enter this space through a plurality ofopenings 29 defined by spaces between the ribs 26 (see FIG. 3). FIG. 3perhaps more clearly illustrates the path followed by a liquid which isdispensed by the pourout fitment It). The openings 29 between the ribs26 may readily be seen in FIG. 3. In addition, the connection of theflange 22 to the vent tube 24 by the ribs 26 is clearly seen in FIG. 3.

A closure 30 adapted for use with the pourout fitment may be seen inFIG. 2. The closure 30 has a top panel 32 and an integrally formeddepending annular skirt 34. The annular skirt 34 is provided withthreads 36 on the interior of its lower portion to allow engagement withthe threaded portion of a container. Spaced radially inward from theannular skirt 343 is a depending annular ring 38, integrally attached tothe top panel 32. Adjacent the annular ring 38 is a sealing groove 40,one of whose sides is defined by the inner wall of the annular ring 38.The other wall of the sealing groove 40 is defined by the tapered outerwall of a downwardly depending annular bead 412 integrally formed withthe top panel 32. As will be shown with reference to FIG. 4, the taperof the outer wall of the annular bead 42 substantially matches the flareof the upper portion of the pouring tube i8.

With reference to FIG. 4, the pourout fitment 116 is shown in positionon the neck portion 44 of a container. The neck 44 terminates in a rimportion 45, de fining an opening 43 into the container. The neck 44 ofthe container has an upper groove 46 adapted to engage the bead on theannular engaging member 14. This engagement of the annular member 14 inthe groove 46 firmly attaches the pourout fitment lid to the containerneck 44. Also on the container neck 44 are a series of external threads48 adapted to engage the corresponding threads 36 of the closure 30.FIG. 43 shows the closure 30 in a position just prior to its finalengagement with the threads 43. That is, the pourout fitment 10 has notyet been completely sealed. As may be seen, the outer tapered surface ofthe annular bead 42 sealingly contacts the upper flared portion of thehollow pouring tube 18. It may also be appreciated that as the closure30 is rotated into its final seated position, the flattened verticalportion of the upper flared portion of the hollow pouring tube I18 willsealingly engage the inner wall of the annular ring 38. The annular ring38 itself seats on the upper disc member 12 of the pourout fitment 10 tolimit the engagement of the closure with the neck 44 of the container,Thus in operation, the pourout fitment in being placed on a containerfilled with liquid, may allow the contents of the container to be pouredfrom the container with a minimum of splashing or gurling due to airlock conditions. This is accomplished by allowing air to enter thecontainer through the vent tube 24 when the container is tipped to pourout the contents. The liquid contents pass through the openings 29 andimpact on the flowdiverting ledge 28, thereby slowing the flow of liquidfrom the container. The liquid contents then follow the tapered openingbetween the pouring tube l8 and the vent tube 24. As contents areremoved from the container by this method, their volume is replaced byincoming air through the vent tube 24.

Turning now to FIG. 5, a somewhat different configuration of the closuremember 30 is illustrated. It should be understood that the fitment 10described previously may be utilized with this modified closure 56. Theclosure member 50 has an upper, substantially horizontal top panel 52and a lower, substantially horizontal panel 54 which is substantiallyparallel with the upper panel 52. The upper panel 52 and the lower panel54 are integrally connected as a unit by a vertically extending, annular wall 56. An annular skirt 58 depends from and is integrallyattached to the lower panel 54. The interior of the lower portion of theannular skirt 58 is provided with threads 60 for engagement withcorresponding threads on a container. integrally molded with the lowersurface of the lower panel 54 is a downwardly depending annular bead 62.The annular bead 62 serves much the same purpose as the annular ring 38in the embodiment shown in FIG. 2; that is, the annular bead 62 limitsthe engagement of the pouring tube 18 with a sealing groove 64 formed inthe closure member 50. In the embodiment shown in FIG. 5, the sealinggroove 64 has its outer wall defined by the inner wall of the annularvertical wall 56. Its inner wall is defined by the outer tapered wall ofa downwardly depending annular sealing bead 66 integrally attached tothe upper panel 52, the sealing bead 66 being radially inwardly spacedfrom the annular wall 56.

FIG. 6 illustrates the closure member 50 partially engaged with the neckportion 44 of a container. It may be seen that the flared upper portionof the pouring tube 18 engages the tapered outer wall of the annularbead 66. Thus, the sealing process begins as the closure 50 is initiallyengaged with the threads 48 on the bottle neck 44.

FIG. 7 illustrates the closure 50 completely seated and sealed withrespect to the pourout fitment 10. It may be seen that the lower panel54 is not in contact with the upper surface of the disc member 12, butrather the annular head 62 contacts the upper surface of the disc member12 and thus provides a limit of the sealing engagement of the flaredupper portion of the pourout tube 18 and the tapered wall of the annularsealing bead 66. In addition, the vertical upper portion 20 of thepourout tube 18 is in sealing engagement with the inner wall of theannular wall 56.

What I claim is:

I. A liquid pourout fitment and removable screw closure in combinationwith a bottle adapted to contain a liquid, said bottle having anexteriorly threaded neck portion for selectively applying the closurethereto, said neck portion having a rim defining an opening for saidbottle and defining an annular snap-on groove intermediate the rim andsaid threads; said fitment comprising, a disc element having a centrallylocated opening therethrough and an annular bottle neck engaging memberon the periphery of said disc, an integral, axial, hollow pouring tubesurrounding the periphery of said opening and extending vertically aboveand below the plane of said disc element, said pouring tube biengoutwardly flared at its upper extremity, said flared portion terminatingin a substantially vertical end portion, and having an inwardly directedflange at its lower extremity, a tapered, axial, hollow vent tube havinga maximum outside diameter less than the inside diameter of I saidpouring tube and being located concentrically with respect to saidpouring tube, said vent tube being integrally connected to said inwardlydirected flange by a plurality of rib members to thereby define aplurality of openings to allow escape of a liquid within said bottle,said tapered vent tube having an upper portion defined by an outsidediameter tapering toward said pouring tube and terminating at a locationintermediate said inwardly directed flange and said upper extremity ofsaid pouring tube, and a lower portion, integrally connected to saidupper portion, defined by an outside diameter tapering away from saidpouring tube and terminating at a point below said inwardly directedflange, the outside diameter of said lower portion being less than theoutside diameter of said upper portion at the point of connection ofsaid upper and lower portions, the difference in outside diameters ofsaid upper and lower portions serving to define a flow diverting ledge,the inside diameter adjacent the smallest outside diameter of said upperportion to a second inside diameter, smaller than said first insidediameter, adjacent the termination of said lower portion of said venttube; said screw closure comprising, a skirt portion formed with threadson its interior surface for securing said closure to the threads of thesaid bottle neck, a substantially horizontal top panel integrallyconnected to said skirt, a downwardly depending annular ring integrallyconnected to said top panel radially, inwardly spaced from said skirt,an annular, downwardly depending bead radially, inwardly spaced fromsaid downwardly depending annular ring, said bead being attached to theinterior surface of said top panel, said bead having a diameter greaterthan the outside diameter of said vent tube, the outer wall of said beadbeing tapered to match the flare of the upper portion of said pouringtube, and an annular sealing groove, said sealing groove having itsouter wall defined by said downwardly depending annular ring and itsinner wall defined by the outer wall of said downwardly depending bead,the width of said sealing groove being such that upon engagement of saidclosure and said fitment, the outer wall of said bead will sealinglyengage the inner flared wall of said pouring tube and the inner wall ofsaid annular ring will sealingly engage the vertical end portion of saidflared upper extremity of said pouring tube, the engagement of saidfitment and said closure being limited by the abutment of said discelement of said fitment and said downwardly depending annular ring.

2. A liquid pourout fitment and removable screw closure in combinationwith a bottle adapted to contain a liquid, said bottle having anexteriorly threaded neck portion for selectively applying the closurethereto, said neck portion having a rim defining an opening for saidbottle and defining an annular snap-on groove intermediate the rim andsaid threads; said fitment comprising, a disc element having a centrallylocated opening therethrough and an annular bottle neck engaging memberon the periphery of said disc, an integral, axial, hollow pouring tubesurrounding the periphery of said opening and extending vertically aboveand below the plane of said disc element, said pouring tube beingoutwardly flared at its upper extremity, said flared portion terminatingin a substantially vertical end portion, and having an inwardly directedflange at its lower extremity, a tapered, axial, hollow vent tube havinga maximum outside diameter less than the inside diameter of said pouringtube and being located concentrically with respect to said pouring tube,said vent tube being integrally connected to said inwardly directedflange by a plurality of rib members to thereby define a plurality ofopenings to allow escape of a liquid within said bottle, said taperedvent tube having an upper portion, defined by an outside diametertapering toward said pouring tube and terminating at a locationintermediate said in wardly directed flange and said upper extremity ofsaid pouring tube, and a lower portion, integrally connected to saidupper portion, defined by an outside diameter tapering away from saidpouring tube and terminating at a point below said inwardly directedflange, the outside diameter of said lower portion being less than theoutside diameter of said upper at the point of connection of said upperand lower portions, the difference in outside diameters of said upperand lower portions serving to define a flow diverting ledge, the insidediameter of said vent tube tapering uniformly from a first insidediameter adjacent the smallest outside diameter of said upper portion toa second inside diameter, smaller than said first inside diameter,adjacent the termination of said lower portion of said vent tube; saidscrew closure comprising a skirt portion formed with threads on itsinterior surface for securing said closure to the threads of said bottleneck, an upper, substantially horizontal panel, a lower, parallel,substantially horizontal panel integrally connected to said skirt, saidupper and lower panels being integrally attached by a verticallyextending annular wall, an annular, down wardly depending sealing beadradially, inwardly spaced from said annular wall attached to theinterior surface of said upper panel, said head having a diametergreater than the outside diameter of said vent tube, the outer wall ofsaid bead being tapered to match the flare of the upper portion of saidpouring tube, a downwardly depending, annular engagement bead integrallyformed on the lower surface of said lower parallel panel, and an annularsealing groove, said sealing groove having its outer wall defined bysaid annular wall and its inner wall defined by the outer wall of saidannular, downwardly depending sealing bead, the width of said sealinggroove being such that, upon engagement of said closure and saidfitment, the outer wall of said sealing bead will sealingly engage theinner flared wall of said pouring tube and the inner wall of saidannular wall will sealingly engage the vertical end portion of saidflared upper extremity of said pouring tube, the engagement of saidfitment and said closure being limited by the abutment of said discelement of said fitment and said downwardly depending, annularengagement bead formed on the inner surface of said lower, parallelpanel.

* ll l UNITE STATES PATENT OFFICE CERTIFICATE I OF CORRECTION Patent No.63,612

InventorIsL- LLER Dated October 2, 1973 It is certified that errorappears in the above-identified patent and that said Letters Patent arehereby corrected as shown below:

A Col. 2, line l7, "one" should be --of--. Col.4, line 54 of claim 1,"bieng" should be -being-.

Col. 5, line 11 of claim 1, after "diameter" insert --of said vent tubetapering uniformly from a first inside diameter--. Col. 6, line 17 ofclaim 2, after "upper" insert ---portion-.

(SEAL) Signed and sealed this 19th (111$ of February- 1974.

Attest:

EDWARD M.FLETCHER,JR. A Attesting Officer c. MARSHALL DANN Commissionerof Patents Emu Po-wso (10-69) USCOMM-DC 60376-P69 w u.s. GOVERNMENTPRINTING oFnc: "I! O-3-S4.

1. A liquid pourout fitment and removable screw closure in combinationwith a bottle adapted to contain a liquid, said bottle having anexteriorly threaded neck portion for selectively applying the closurethereto, said neck portion having a rim defining an opening for saidbottle and defining an annular snapon groove intermediate the rim andsaid threads; said fitment comprising, a disc element having a centrallylocated opening therethrough and an annular bottle neck engaging memberon the periphery of said disc, an integral, axial, hollow pouring tubesurrounding the periphery of said opening and extending vertically aboveand below the plane of said disc element, said pouring tube biengoutwardly flared at its upper extremity, said flared portion terminatingin a substantially vertical end portion, and having an inwardly directedflange at its lower extremity, a tapered, axial, hollow vent tube havinga maximum outside diameter less than the inside diameter of said pouringtube and being located concentrically with respect to said pouring tube,said vent tube being integrally connected to said inwardly directedflange by a plurality of rib members to thereby define a plurality ofopenings to allow escape of a liquid within said bottle, said taperedvent tube having an upper portion defined by an outside diametertapering toward said pouring tube and terminating at a locationintermediate said inwardly directed flange and said upper extremity ofsaid pouring tube, and a lower portion, integrally connected to saidupper portion, defined by an outside diameter tapering away from saidpouring tUbe and terminating at a point below said inwardly directedflange, the outside diameter of said lower portion being less than theoutside diameter of said upper portion at the point of connection ofsaid upper and lower portions, the difference in outside diameters ofsaid upper and lower portions serving to define a flow diverting ledge,the inside diameter adjacent the smallest outside diameter of said upperportion to a second inside diameter, smaller than said first insidediameter, adjacent the termination of said lower portion of said venttube; said screw closure comprising, a skirt portion formed with threadson its interior surface for securing said closure to the threads of thesaid bottle neck, a substantially horizontal top panel integrallyconnected to said skirt, a downwardly depending annular ring integrallyconnected to said top panel radially, inwardly spaced from said skirt,an annular, downwardly depending bead radially, inwardly spaced fromsaid downwardly depending annular ring, said bead being attached to theinterior surface of said top panel, said bead having a diameter greaterthan the outside diameter of said vent tube, the outer wall of said beadbeing tapered to match the flare of the upper portion of said pouringtube, and an annular sealing groove, said sealing groove having itsouter wall defined by said downwardly depending annular ring and itsinner wall defined by the outer wall of said downwardly depending bead,the width of said sealing groove being such that upon engagement of saidclosure and said fitment, the outer wall of said bead will sealinglyengage the inner flared wall of said pouring tube and the inner wall ofsaid annular ring will sealingly engage the vertical end portion of saidflared upper extremity of said pouring tube, the engagement of saidfitment and said closure being limited by the abutment of said discelement of said fitment and said downwardly depending annular ring.
 2. Aliquid pourout fitment and removable screw closure in combination with abottle adapted to contain a liquid, said bottle having an exteriorlythreaded neck portion for selectively applying the closure thereto, saidneck portion having a rim defining an opening for said bottle anddefining an annular snap-on groove intermediate the rim and saidthreads; said fitment comprising, a disc element having a centrallylocated opening therethrough and an annular bottle neck engaging memberon the periphery of said disc, an integral, axial, hollow pouring tubesurrounding the periphery of said opening and extending vertically aboveand below the plane of said disc element, said pouring tube beingoutwardly flared at its upper extremity, said flared portion terminatingin a substantially vertical end portion, and having an inwardly directedflange at its lower extremity, a tapered, axial, hollow vent tube havinga maximum outside diameter less than the inside diameter of said pouringtube and being located concentrically with respect to said pouring tube,said vent tube being integrally connected to said inwardly directedflange by a plurality of rib members to thereby define a plurality ofopenings to allow escape of a liquid within said bottle, said taperedvent tube having an upper portion, defined by an outside diametertapering toward said pouring tube and terminating at a locationintermediate said inwardly directed flange and said upper extremity ofsaid pouring tube, and a lower portion, integrally connected to saidupper portion, defined by an outside diameter tapering away from saidpouring tube and terminating at a point below said inwardly directedflange, the outside diameter of said lower portion being less than theoutside diameter of said upper at the point of connection of said upperand lower portions, the difference in outside diameters of said upperand lower portions serving to define a flow diverting ledge, the insidediameter of said vent tube tapering uniformly from a first insidediameter adjacent the smallest outside diameter oF said upper portion toa second inside diameter, smaller than said first inside diameter,adjacent the termination of said lower portion of said vent tube; saidscrew closure comprising a skirt portion formed with threads on itsinterior surface for securing said closure to the threads of said bottleneck, an upper, substantially horizontal panel, a lower, parallel,substantially horizontal panel integrally connected to said skirt, saidupper and lower panels being integrally attached by a verticallyextending annular wall, an annular, downwardly depending sealing beadradially, inwardly spaced from said annular wall attached to theinterior surface of said upper panel, said bead having a diametergreater than the outside diameter of said vent tube, the outer wall ofsaid bead being tapered to match the flare of the upper portion of saidpouring tube, a downwardly depending, annular engagement bead integrallyformed on the lower surface of said lower parallel panel, and an annularsealing groove, said sealing groove having its outer wall defined bysaid annular wall and its inner wall defined by the outer wall of saidannular, downwardly depending sealing bead, the width of said sealinggroove being such that, upon engagement of said closure and saidfitment, the outer wall of said sealing bead will sealingly engage theinner flared wall of said pouring tube and the inner wall of saidannular wall will sealingly engage the vertical end portion of saidflared upper extremity of said pouring tube, the engagement of saidfitment and said closure being limited by the abutment of said discelement of said fitment and said downwardly depending, annularengagement bead formed on the inner surface of said lower, parallelpanel.